com.googlecode.jmxtrans.util.ObjectToDouble Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jmxtrans-utils Show documentation

This module contains utilities that do not have direct dependencies on JmxTrans.

There is a newer version: 272

/**
 * The MIT License
 * Copyright © 2010 JmxTrans team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.googlecode.jmxtrans.util;

import com.google.common.base.Function;

import static java.lang.String.format;

public class ObjectToDouble implements Function {

	@Override
	public Double apply(Object input) {
		if (input instanceof Double) return (Double) input;
		if (input instanceof Number) return ((Number) input).doubleValue();

		throw new IllegalArgumentException(format("There is no converter from [%s] to Double ", input.getClass().getName()));
	}
}